Señal / indicio de un mal día
Que le parece mejor? No quiero que sea formal, sólo coloquial
Gracias
3 Answers
"Señal" is the word to use in that case.
"Señal" could mean that, there is something "hidden" (malignant or benign) behind. "Signo" would not be used in that type of context.
Although they both mean "sign", "signo" usually refers to symbols (signo zodiacal = zodiac sign), while "señal" usually refers to a message, a signal (una señal de los dioses = a sign from the gods).
Actually, this would work too. "Es muestra de"
I found in a phrase book "indicar que/señalar que" both meaning to be a sign or indication that...
tener un día de perros es tener un mal dia
There are plenty of references but here is one discussing the phrase: